/-app
/-files ...
FileTree.ts
SyncStorageAccess.ts
/-imports
/-storage
/-typings
codemirror.d.ts
websql.d.ts
functions.ts
index.html
try.js 
xxxxxxxxxx
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module teapo.files {
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  export class FileTree {
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    private _ul: HTMLUListElement;
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    private _rootNode: Node[];
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​
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    access: SyncStorageAccess;
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​
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    constructor(private _host: HTMLUListElement) {
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      this._ul = getChildUL(this._host);
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      // TODO: do something if ul is null
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​
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      this.access = {
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        update: (byFullPath, timestamp) => this._update,
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        read: (fullPaths) => this._read(fullPaths)
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      };
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    }
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​
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    private _update(
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      byFullPath: storage.PropertiesByFullPath,
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      timestamp: number): void {
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    }
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​
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    private _read(
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      fullPaths: string[]): storage.PropertiesByFullPath {
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      return {};
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    }
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​
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  }
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  class Node {
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    name: string;
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    fullPath: string;
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​
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    private _resolvedUL = false;
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    private _ul: HTMLUListElement;
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    private _children: Node[];
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    private _li: HTMLLIElement;
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​
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    constructor(
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      parentPath: string,
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      li: HTMLLIElement);
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    constructor(ul: HTMLUListElement);
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    constructor (arg1, arg2) {
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      if (arg2) {
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​
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                              this._li = li;
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                              var liText = getLIText(this._li);
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                              var slashPos = liText.indexOf('/');
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                              if (slashPos >= 0)
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                                      this._handleComplexPathOnLoad(liText);
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                              this.name = liText;
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                              this.fullPath = parentPath + '/' + liText;
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                              this._ul = null;
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                              this._children = null;
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                            }
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      else {
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​
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                      this.name = '';
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                      this.fullPath = '';
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                      this._ul = ul;
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                      this._li = null;
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                      }
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    }
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​
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    getNode(path: string, createIfAbsent: boolean): Node {
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​
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      this._ensureULResolved();
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​
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      if (!this._ul)
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        throw new Error('Node is not a directory.');
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      var name: string, restPath: string;
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      var slashPos = path.indexOf('/');
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      while (!slashPos) { // slight normalization, keep it for the sake of root paths
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          path = path.slice(1);
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          slashPos = path.indexOf('/');
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      }
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​
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      if (slashPos < 0) {
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